Skoda Workshop Service and Repair Manuals > Octavia Mk1 > Drive unit | 1.4/55 kW Engine - Injection | Self diagnosis, V.A.G Inspection Service | Self-diagnosis V | Read the measured value blocks, display groups 001...009 | Analysis of display group 002, display field 4

Analysis of display group 002, display field 4 - intake manifold pressure

Readout on -V.A.G 1552 -

Possible cause of fault

Rectifying fault

below 250 mbar

t	Large quantity of unmetered air between intake manifold and air mass meter

–	Eliminate unmetered air

–	Check intake manifold pressure sender -G71-

above 500 mbar

t	Engine loaded by auxiliary equipment

–	Eliminate load (air conditioning, power steering etc.)

–	Check intake manifold pressure sender -G71-

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